The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 26, 2019

Filed:

Aug. 07, 2018
Applicant:

Airware, Inc., Goleta, CA (US);

Inventors:

Jacob Y Wong, Goleta, CA (US);

Thomas Campbell, Newbury Park, CA (US);

Assignee:

AIRWARE, INC., Goleta, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/59 (2006.01); G01N 33/49 (2006.01); G01N 21/35 (2014.01); G01N 21/27 (2006.01); G01J 3/42 (2006.01); G01N 21/3577 (2014.01); G01J 3/427 (2006.01); G01N 21/47 (2006.01); G01N 21/31 (2006.01);
U.S. Cl.
CPC ...
G01N 21/59 (2013.01); G01J 3/427 (2013.01); G01N 21/274 (2013.01); G01N 21/3577 (2013.01); G01N 33/49 (2013.01); G01N 2021/3148 (2013.01); G01N 2021/473 (2013.01); G01N 2201/0696 (2013.01); G01N 2201/127 (2013.01);
Abstract

For determining concentration of targeted molecules Min a liquid sample admixed with interfering molecules Mwhich overlap their absorption band, a special NDIR sampling and calibration technique is employed. Besides the signal source, a reference and one or more interference sources are added. The selection of the wavelength for the interference sources enables its measured transmittance value to be used for deciding the validity of the calibration curve for molecules Min the liquid sample. This value can further be used to adjust the calibration curve via a parameter linking the transmittances measured at the signal and interference wavelength channels in order to assure its validity.


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